it's all over testimony clapper gave in march on the nsa spying scandal. >> does the nsa collect any type of data at all on millions or hundreds of millions of americans? >> no, sir. >> it does not? >> not wittingly. there are cases where they could inadvertently perhaps collect, but not wittingly. >> documents leaked by edward snowden reveals the nsa collects records on virtually all u.s. phone calls. when that came out, clapper apologized saying he tried to give the least untruthful answer without revealing classified information. sensenbrenner says that doesn't hold water and that the courts and congress depend on accurate testimony to do their jobs. a clapper spokesperson declined to comment. >>> tributes are pouring in all over the globe. people mourning and remembering the life of south african president nelson mandela. his family thanking everyone for their thoughts and prayers. >> we have lost a great man. his greatness in our family was in the simplicity of his nature. >> america will never forget the attack on pearl harbor. launched our country into world war ii. today we t